This high quality clock insert is easy to mount into your craft project. All you need to do is push it into the front of your clock case and the pressure clips on the side of the case will hold it in place. It has a quartz mechanism for accuracy and takes an "N" size battery(not included). Just add a battery, set the time, push the clock into your clock case and it is ready to go. It has a durable bright gold rim and easy-to-read black hands and Roman numerals against a white face. Measuring 2-7/8", it will fit into any clock case that has an opening 2-5/16" to 2-7/16". Be sure to visit our Storefront to see more related items AND hundreds more products that fit all your craft, art and hobby needs. We have the creative component you need!!!